한국음향학회지 (The Journal of the Acoustical Society of Korea)

  • 제21권4호
  • /
  • Pages.178-178
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  • 2002
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  • 1225-4428(pISSN)
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  • 2287-3775(eISSN)
한국음향학회 (The Acoustical Society of Korea)
권호 표지

Adaptive Wavelet Denoising For Speech Rocognition in Car Interior Noise

  • 김이재 (한양대학교 School of Electrical and Computer Engineering) ;
  • 양성일 (한양대학교 School of Electrical and Computer Engineering) ;
  • Kwon, Y. (한양대학교 Department of Physics) ;
  • Jarng, Soon S. (조선대학교 Department of Control and Implementation Engineering)
  • 발행 : 2002.05.01
⟨ 이전 논문 다음 논문 ⟩

초록

In this paper, we propose an adaptive wavelet method for car interior noise cancellation. For this purpose, we use a node dependent threshold which minimizes the Bayesian risk. We propose a noise estimation method based on spectral entropy using histogram of intensity and a candidate best basis instead of Donoho's best bases. And we modify the hard threshold function. Experimental results show that the proposed algorithm is more efficient, especially to heavy noisy signal than conventional one.

키워드

참고문헌

  1. Sci 2002, Ⅸ Adaptive wavelet denoising for a car interior noise E-jae Kim;Sung-il Yang;Y.Kwon
  2. ICASSP 2002 v.1 Speech enhancement for non-stationary noise environment by adaptive wavelet packet Sungwook Chang;Y.Kwon;Sung-il Yang;E-jae Kim
  3. IEEE Trans. Image Procesing v.9 Adaptive Wavelet Thresholding for Image Denoising and Compression S. Grace Chang;Bin Yu;Martin Vetterli
  4. J. Amer. Statist. Assoc. v.92 no.440 Adaptive Bayesian Wavelet Shinkage H.Chipman;E.Kolaczyk;R.McCulloch https://doi.org/10.2307/2965411
  5. IEEE Trans. Inform. Theory v.41 Denoising by soft-thresholding D.L.Donoho https://doi.org/10.1109/18.382009
  6. J. R. Stat. Soc. B, ser. B v.57 no.2 Wavelet Shrinkage : Asymptopia? D.L.Donoho
  7. A Wavelet Tour of Signal Processing S.Mallat
  8. Statistical Modeling by Wavelet Brani Vidakovic